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Income Taxes - Significant Components of Deferred Tax Assets and Deferred Tax Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Deferred tax assets:    
Carry-forward losses and credits $ 59,189 $ 23,675
Inventory and warranty reserves 29,661 17,945
Accrued expenses and other reserves 12,607 10,260
Stock-based compensation 8,580 5,351
Executive supplemental retirement benefits 1,556 5,972
Lease liability 15,284  
Deferred tax assets utilization loss 2,741  
Other 2,347 2,396
Total deferred tax assets 131,965 65,599
Deferred tax liabilities:    
Acquired intangible assets and goodwill (128,144) (74,120)
Depreciation and amortization (14,072) (8,332)
Loan costs (2,317) (1,108)
Right of use asset (14,415)  
Foreign withholding taxes (5,008) (3,176)
Unrealized net gain   (1,952)
Total deferred tax liabilities (163,956) (88,688)
Valuation allowance (27,360) (17,936)
Net deferred tax (liabilities) assets $ (59,351) $ (41,025)